diff --git a/externals/prebuild_scripts/build_g2o_for_mac64.sh b/externals/prebuild_scripts/build_g2o_for_mac64.sh
index e60afa1a..b9206962 100755
--- a/externals/prebuild_scripts/build_g2o_for_mac64.sh
+++ b/externals/prebuild_scripts/build_g2o_for_mac64.sh
@@ -17,11 +17,12 @@ then
     echo "g2o directory doesn't exists"
     git clone https://github.com/RainerKuemmerle/g2o.git ../g2o
 fi
-git checkout $VERSION
 
 echo "Building g2o using the sources in the thirdparty directory"
 cd ../g2o
 
+git checkout $VERSION
+
 # Make build folder for debug version
 mkdir build
 rm -rf $BUILD_D
diff --git a/externals/prebuild_scripts/build_g2o_for_macArm64.sh b/externals/prebuild_scripts/build_g2o_for_macArm64.sh
index 0b68fd63..4a007607 100755
--- a/externals/prebuild_scripts/build_g2o_for_macArm64.sh
+++ b/externals/prebuild_scripts/build_g2o_for_macArm64.sh
@@ -17,11 +17,12 @@ then
     echo "g2o directory doesn't exists"
     git clone https://github.com/RainerKuemmerle/g2o.git ../g2o
 fi
-git checkout $VERSION
 
 echo "Building g2o using the sources in the thirdparty directory"
 cd ../g2o
 
+git checkout $VERSION
+
 # Make build folder for debug version
 mkdir build
 rm -rf $BUILD_D